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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] [PATCH 2/4] CPUIDLE: Avoid remnant LAPIC timer intr while force hpetbroadcast
On Thursday, September 11, 2008 3:38 PM, Keir Fraser wrote: > On 10/9/08 15:25, "Wei, Gang" <gang.wei@xxxxxxxxx> wrote: > >>> It's not clear to me the disable/enable_LAPIC_timer() work is worthwhile for >>> the few timer interrupts it is likely to avoid. The other bit of the patch >>> is a good bugfix though. I've taken just the latter part. >> >> Thanks for accept most of these patches. As to disable/enable_LAPIC_timer(), >> I add them because some platforms require the LAPIC timer intr being disabled >> before entering C3, otherwise there may be some unexpected things. As a >> reference, Linux kernel always do so. > > Is this a documented aspect of C3, or just one of those things? Do you know > what kind of 'unexpected things' can happen? Currently let's just regard it as one of those things. I think kevin's reply can explain it better from another perspective. Jimmy _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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